CN106241934A - Method for reducing content of phenol in water by using unburned carbon in solid waste fly ash - Google Patents
Method for reducing content of phenol in water by using unburned carbon in solid waste fly ash Download PDFInfo
- Publication number
- CN106241934A CN106241934A CN201610632045.XA CN201610632045A CN106241934A CN 106241934 A CN106241934 A CN 106241934A CN 201610632045 A CN201610632045 A CN 201610632045A CN 106241934 A CN106241934 A CN 106241934A
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- China
- Prior art keywords
- phenol
- water
- unburned
- charcoal
- unburned charcoal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
- C02F2101/345—Phenols
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a method for reducing phenol content in water by using unburned carbon in solid waste fly ash, which comprises the steps of fly ash flotation, unburned carbon stirring adsorption, centrifugal solid-liquid separation, detection and the like; floating industrial solid waste fly ash to obtain a foam product unburned carbon; adding unburned carbon into phenol-containing sewage for adsorption, and performing solid-liquid separation by a centrifuge after the adsorption is finished to obtain supernatant which is treated purified water; and (5) calculating the removal rate of phenol in water by the unburned carbon. The invention utilizes the porous structure with fine particle size, large surface area and rich non-combustible carbon to adsorb and remove phenol in water, thereby reducing the content of phenol in water and achieving the effect of reducing waste.
Description
Technical field
The invention belongs to chemical mineral processing and technical field of sewage, be specifically related to one and utilize solid waste coal ash
In unburned charcoal reduce the method for phenol content in water.
Technical background
Process the waste water containing phenol and mainly take absorption method, bioanalysis and chemical oxidization method three major types.Wherein bioanalysis needs
Want harsh control operating condition and the adaptability of microorganism, be difficult to operate；Chemical oxidization method need such as High Temperature High Pressure,
The specified conditions such as light, sound, catalyst, light radiation, processing cost is high, is difficult to commercial Application；Absorption method have operational approach simple,
Polluting the advantages such as little, currently used adsorbent mainly has resin, activated carbon etc., and it is relatively costly.
Summary of the invention
It is an object of the invention to provide and a kind of utilize unburned charcoal in solid waste coal ash to reduce phenol content in water
Method, to solve to process the problem that wastewater containing phenol cost is high, operating condition is harsh at present.
The present invention solves the technical scheme of technical problem: one utilizes unburned charcoal in solid waste coal ash to reduce water
The method of middle phenol content, comprises the steps:
Step 1: flyash flotation obtains unburned charcoal: by flyash by 1 mm sieve remove easily blocking flotation device impurity and
Bulk granule, adds water flyash lower for sieve and is configured to the ore pulp that mass concentration is 20 ~ 25%, and addition 800 in this ore pulp ~
After 1600 g ton collecting agent diesel oil stir 5 ~ 7 minutes, add 400 ~ 900 g ton foaming agent sec-octyl alcohol stirring 3 ~ 5 minutes, then
Inflation is roughly selected, and roughly selects the time 4 ~ 6 minutes, obtains roughly selecting unburned charcoal；Roughly selecting unburned charcoal ore pulp mass concentration is 13 ~ 18%
Carry out selected under part, 3 ~ 5 minutes selected time, selected product is dried, obtain unburned charcoal；
Step 2: phenol remove: take concentration be 50 ~ 160 mg/litre phenol solution 200 milliliters in beaker, addition weight is benzene
The unburned charcoal of phenol weight 500 ~ 600 times stirs, and is positioned over magnetic stirrer, and stirring intensity is 500 ~ 1000 revs/min
Clock, mixing time is 30 minutes, through centrifuge solid-liquid separation after having adsorbed, supernatant be process after the purification water that obtains；
Step 3: detection: supernatant step 2 obtained carries out phenol content detection by ultraviolet spectrophotometer, calculates not
Combustion charcoal is to the clearance of phenol in water.
The invention has the beneficial effects as follows: burning under coal dust high temperature more than 1000 DEG C, its time of staying in stove is short
Short only 1 ~ 2 second, easily cause incomplete combustion, become unburned charcoal；Starting combustion phases, the volatilization in coal dust grades and constantly escapes
Going out, make pulverized coal particle porous surface, specific surface area constantly increases, the most unburned charcoal have volatile matter content few, in spongy or
The features such as cellular, internal porous, short texture.The fat chain structure of unburned charcoal remnants can form hydrogen bond with the hydroxyl of phenol
Absorption, unburned charcoal space is flourishing, fine size, brings up its specific surface area and can be formed by Van der Waals force many with the phenol in water greatly
Layer physical absorption.The loose structure that unburned charcoal specific surface area is big and abundant is that it can reduce the main cause of phenol content in water.
The method using the present invention has honesty, raw material is easy to get, turn waste into wealth, simple to operate, pollution-free, purification efficiency high.
Comparing with active carbon purifying water, treatment effect is essentially identical, but low cost, unburned charcoal comes from solid waste coal ash, powder
Coal ash becomes garbage it is usually because flammable body burden is high, after the unburned charcoal of flotation removing, and flammable body burden step-down, can
To be utilized by large building materials etc., there is the effect killed two birds with one stone；Comparing with ordinary fly ash, unburned charcoal processes the sewage Han phenol,
Have the advantages that removal efficiency is high.
Detailed description of the invention
Embodiment 1
A kind of utilize unburned charcoal in solid waste coal ash to reduce the method for phenol content in water, be 160 to 200 milliliters of concentration
Mg/litre phenol solution carries out removing phenol test.Certain flyash content of ashes 79.12%, by 1 mm sieve, removes big
Granule slag, undersize mixing adds water and is configured to the ore pulp that mass concentration is 25%, adds diesel oil 1600 g ton in ore pulp,
Stirring 6 minutes, add sec-octyl alcohol 900 g ton, stir 4 minutes, flotation time is 5 minutes, obtains roughly selecting unburned charcoal；Roughly select
Unburned charcoal carries out selected under the conditions of concentration is 17%, and flotation time is 4 minutes, obtains final unburned charcoal, unburned charcoal content of ashes
It is 20.95%.Taking 19 grams of unburned charcoals and joining 200 milliliters of concentration is to stir in 160 mg/litre phenol solutions, is positioned over
Being stirred on magnetic stirring apparatus, stirring intensity is 500 revs/min, and the stirring and adsorbing time is 30 minutes, and stirring is passed through after terminating
Centrifuge carries out solid-liquid centrifugation separation, detects upper liquid (water after process), and its phenol content is 34 mg/litre, removes
Rate is 78.75%.
In order to further illustrate the beneficial effect of the present embodiment, do two groups of controlled trials below:
Reference examples 1
Use tail flyash (flyash flotation tailing) content of ashes 96.05% for remover in embodiment 1, adsorb
Removing, after it finally processes, water phenol content is 157 mg/litre, clearance 1.88%.
Reference examples 2
Using activated carbon in embodiment 1 is remover, carries out adsorbing and removing, and after it finally processes, water phenol content is 40 millis
Grams per liter, clearance 75%.
Embodiment 2
A kind of utilize unburned charcoal in solid waste coal ash to reduce the method for phenol content in water, be 50 to 200 milliliters of concentration
Mg/litre phenol solution carries out removing test.Certain flyash content of ashes 79.12%, by 1 mm sieve, removes sieve upper big
Granule slag, undersize mixing adds water and is configured to the ore pulp that mass concentration is 25%, adds diesel oil 1600 g ton in ore pulp,
Stirring 6 minutes, add sec-octyl alcohol 900 g ton, stir 4 minutes, flotation time is 5 minutes, obtains roughly selecting unburned charcoal；Roughly select
Unburned charcoal carries out selected under the conditions of concentration is 17%, 4 minutes selected time, obtains final unburned charcoal, and unburned charcoal content of ashes is
20.95%.Taking 6 grams of unburned charcoals and joining 200 milliliters of concentration is to stir in 50 mg/litre phenol solutions, is positioned over magnetic force
Being stirred on agitator, stirring intensity is 500 revs/min, and the stirring and adsorbing time is 30 minutes, and stirring is passed through centrifugal after terminating
Machine carries out solid-liquid centrifugation separation, detects upper liquid (water after process), and its phenol content is 3 grams per liters, and clearance is 94%.
In order to further illustrate the beneficial effect of the present embodiment, do two groups of controlled trials below:
Reference examples 1
Use tail flyash (flyash flotation tailing) content of ashes 96.05% for remover in example 2, adsorb
Removing, after it finally processes, water phenol content is 45 mg/litre, clearance 10%.
Reference examples 2
Using activated carbon in example 2 is remover, carries out adsorbing and removing, its finally process after water phenol content be 5 milligrams/
Rise, clearance 90%.
Embodiment 3
A kind of utilize unburned charcoal in solid waste coal ash to reduce the method for phenol content in water, be 100 to 200 milliliters of concentration
Mg/litre phenol solution carries out removing test.Certain flyash content of ashes 85.12%, by 1 mm sieve, removes sieve upper big
Granule slag, undersize mixing adds water and is configured to the ore pulp that mass concentration is 25%, adds diesel oil 1200 g ton in ore pulp,
Stirring 6 minutes, add sec-octyl alcohol 500 g ton, stir 4 minutes, flotation time is 5 minutes, obtains roughly selecting unburned charcoal；Roughly select
Unburned charcoal carries out selected under the conditions of concentration is 14%, and flotation time is 4 minutes, obtains final unburned charcoal, and its content of ashes is
23.95%.Taking 12 grams of unburned charcoals and joining 200 milliliters of concentration is to stir in 100 mg/litre phenol solutions, is positioned over magnetic
Being stirred on power agitator, stirring intensity is 1000 revs/min, and the stirring and adsorbing time is 30 minutes, and stirring is passed through after terminating
Centrifuge carries out solid-liquid centrifugation separation, detects upper liquid (water after process), and its phenol content is 15 grams per liters, clearance
It is 85%.
In order to further illustrate the beneficial effect of the present embodiment, do two groups of controlled trials below:
Reference examples 1
Use tail flyash (flyash flotation tailing) content of ashes 95.38% for remover in embodiment 3, adsorb
Removing, after it finally processes, water phenol content is 88 mg/litre, clearance 12%.
Reference examples 2
Using activated carbon in embodiment 1 is remover, carries out adsorbing and removing, and after it finally processes, water phenol content is 18 millis
Grams per liter, clearance 82%.
Claims (4)
1. utilizing a method for phenol content during unburned charcoal reduces water in solid waste coal ash, it is special
Levy and be: comprise the steps:
Step 1: flyash flotation obtains unburned charcoal: flyash is removed the impurity of easily blocking flotation device with big by 1 mm sieve
Block granule, adds water the flyash under sieve and is configured to the ore pulp that mass concentration is 20 ~ 25%, adds 800 ~ 1600 in this ore pulp
After g ton collecting agent diesel oil stirs 5 ~ 7 minutes, add 400 ~ 900 g ton foaming agent sec-octyl alcohol and stir 3 ~ 5 minutes, then carry out
Roughly select and obtain roughly selecting unburned charcoal；Roughly selecting unburned charcoal ore pulp mass concentration is to carry out under the conditions of 13 ~ 18% selected, is entered by selected product
Row is dried, and obtains unburned charcoal；
Step 2: phenol remove: take concentration be 50 ~ 160 mg/litre phenol solution 200 milliliters in beaker, addition weight is benzene
The unburned charcoal of phenol weight 500 ~ 600 times stirs, and is positioned over magnetic stirrer, and mixing speed is 500 ~ 1000 revs/min
Clock, the stirring and adsorbing time is 30 minutes, through centrifuge solid-liquid separation after having adsorbed, the supernatant be process after obtain clean
Change water；
Step 3: detection: supernatant step 2 obtained carries out phenol content detection by ultraviolet spectrophotometer, calculates not
Combustion charcoal is to the clearance of phenol in water.
A kind of unburned charcoal in solid waste coal ash is utilized to reduce the side of phenol content in water
Method, it is characterised in that: in the flyash of step 1, unburned charcoal weight/mass percentage composition is 10 ~ 35%.
A kind of unburned charcoal in solid waste coal ash is utilized to reduce the side of phenol content in water
Method, it is characterised in that: roughly selecting of step 1 is roughly selected for inflation, roughly selects the time 4 ~ 6 minutes.
A kind of unburned charcoal in solid waste coal ash is utilized to reduce the side of phenol content in water
Method, it is characterised in that: 3 ~ 5 minutes selected time of step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632045.XA CN106241934A (en) | 2016-08-04 | 2016-08-04 | Method for reducing content of phenol in water by using unburned carbon in solid waste fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632045.XA CN106241934A (en) | 2016-08-04 | 2016-08-04 | Method for reducing content of phenol in water by using unburned carbon in solid waste fly ash |
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| CN106241934A true CN106241934A (en) | 2016-12-21 |
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| CN201610632045.XA Pending CN106241934A (en) | 2016-08-04 | 2016-08-04 | Method for reducing content of phenol in water by using unburned carbon in solid waste fly ash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941328A (en) * | 2019-12-11 | 2021-06-11 | 内蒙古蒙泰集团有限公司 | Treatment method for recycling fly ash |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263891A (en) * | 2013-05-31 | 2013-08-28 | 上海大学 | Method for preparing modified fly ash for effectively treating heavy metal waste water |
| CN104209088A (en) * | 2014-09-24 | 2014-12-17 | 陕西华陆化工环保有限公司 | Preparation method of modified fly ash used for absorbing nitrophenol in waste water |
-
2016
- 2016-08-04 CN CN201610632045.XA patent/CN106241934A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263891A (en) * | 2013-05-31 | 2013-08-28 | 上海大学 | Method for preparing modified fly ash for effectively treating heavy metal waste water |
| CN104209088A (en) * | 2014-09-24 | 2014-12-17 | 陕西华陆化工环保有限公司 | Preparation method of modified fly ash used for absorbing nitrophenol in waste water |
Non-Patent Citations (3)
| Title |
|---|
| 李远义: "《工业废水处理》", 31 December 1975, 中国建筑工业出版社 * |
| 杨伯科: "《混凝土实用新技术手册（精编）》", 31 January 1998, 吉林科学技术出版社 * |
| 胡岳华 等: "《矿物浮选》", 31 March 2014, 中南大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941328A (en) * | 2019-12-11 | 2021-06-11 | 内蒙古蒙泰集团有限公司 | Treatment method for recycling fly ash |
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Application publication date: 20161221 |
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